Are you asking about the line that is coming off the male run on the tee? If so I do not see any issue with this line. You do not want a short run; as this could stress the joint at the tee. Sometimes a little flex is better than no flex at all due to vibration of the trailer as it is traveling.
You also need wrench clearance for assembly and holding the tee in place as you tighten the joint.
2016 34RL CC; 2008 Ram Mega Cab 2500HD, 6.7L, 68RFE 6 speed, 4X4, Smarty S67